package thread;

public class SyncDemo4 {
    public static void main(String[] args) {
        Foo foo = new Foo();
        Thread t1 = new Thread(foo::methodA);
        Thread t2 = new Thread(foo::methodB);
        t1.start();
        t2.start();
    }
}

class Foo {
    public synchronized void methodA() {
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName() + "正在执行A");
            Thread.sleep(5000);
            System.out.println(t.getName() + "A执行完毕");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    public synchronized void methodB() {
        try {
            Thread t = Thread.currentThread();
            System.out.println(t.getName() + "正在执行B");
            Thread.sleep(5000);
            System.out.println(t.getName() + "B执行完毕");
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}